Method for upgrade-processing carbon black produced by performing a pyrolysis process on waste tires
a carbon black and pyrolysis technology, which is applied in the direction of alkali metal compounds, chemistry apparatus and processes, other domestic articles, etc., can solve the problems of carbon black actually hard to be enhanced in quality, the cost of desulfurization is too high, and the purity of carbon black from the pyrolysis of waste tires is liable to deteriorate to about 78 to 82%, so as to reduce the burden of waste water treatment
Inactive Publication Date: 2014-05-13
KOREA INST OF ENERGY RES
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Benefits of technology
This method effectively upgrades carbon black by removing residual volatile substances and inorganic additives, improving its purity and reducing wastewater treatment burdens by converting inorganic substances into water-soluble salts, thereby enhancing its reuse potential.
Problems solved by technology
However, the methods and apparatuses are all required to include a pyrolysis process for recovery of carbon black from waste tires, and the carbon black from the pyrolysis of waste tires is liable to deterioration of purity to about 78 to 82% because of the existence of other additives used in the manufacture of tires.
Among these inorganic additives, sulfur, in most cases, exists in the form of organic sulfur having a bonding with hydrocarbon, and desulfurization costs too much to carry out.
Hence, carbon black is actually hard to be enhanced in quality through desulfurization.
Method used
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[0034]20 g of carbon black produced by performing a pyrolysis on waste tires was treated with 100 ml of 0.05 N, 0.1 N, or 0.2 N HCl solution under agitation at the room temperature for 30 minutes.
[0035]The acid-treated carbon black was collected and measured in regard to the carbon content and the hydrogen content. The measurement results are presented in Table 1.
[0036]
TABLE 1Measurement Results of Carbon and HydrogenContentsCarbon ContentHydrogen ContentSample(%)(%)Original Sample84.001.57Sample Treated0.05N 85.601.37with HCl0.1N86.851.480.2N87.601.55
[0037]As can be seen from Table 1, the elution of inorganic salts with hydrochloric acid was verified by the ascending carbon content of the HCl-treated samples. The carbon content increased with an increase in the concentration of HCl. The carbon content was most increased by 3.6% when the sample was treated with 0.2 N HCl.
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Abstract
Disclosed is a method for upgrade-processing carbon black produced by performing a pyrolysis on waste tires and, more particularly to, a method of upgrading carbon black which includes removing iron wires and fibers from carbon black produced by performing a pyrolysis on waste tires with a magnetic separator and a gravity separator and then subjecting the carbon black to micronization, heating, and acid treatment to upgrade the carbon black. The method for upgrade-processing carbon black produced by performing a pyrolysis on waste tires includes producing an inorganic salt by treating carbon black produced by performing a pyrolysis on waste tires with an acid solution to produce an inorganic salt from an inorganic substance contained in the carbon black.
Description
TECHNICAL FIELD[0001]The present invention relates to a method for upgrade-processing carbon black produced by performing a pyrolysis on waste tires and, more particularly to, a method of upgrading carbon black which includes removing iron wires and fibers from carbon black produced by performing a pyrolysis on waste tires with a magnetic separator and a gravity separator and then subjecting the carbon black to micronization, heating, and acid treatment to update the carbon black.BACKGROUND ART[0002]Carbon black, used in the manufacture of tires, is an essential additive to enhance the cohesiveness of the principal ingredient of tires, rubber, and required to have a high purity of 99% or above.[0003]The methods and apparatuses for recovering carbon black from waste tires are disclosed in Korean Utility Model No. 20-1997-0049594 (“Automatic discharging apparatus of carbon black of decomposer of scrap tires”), Korean Patent No. 0473763 (“Automatic sequential emulsification of scrap ti...
Claims
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IPC IPC(8): B29B17/02
CPCB29K2105/16B29B17/02B29L2030/00B29K2707/04B29B2017/0496Y02W30/622Y02W30/625Y02W30/62C08J11/00B29B17/00
Inventor CHUNG, SOO HYUNNA, JEONG GEOL
Owner KOREA INST OF ENERGY RES